feat: added backend for site comments

src/models.rs

@@ -0,0 +1,25 @@
+use crate::schema::comments;
+use diesel::prelude::*;
+use serde::{Deserialize, Serialize};
+
+#[derive(Queryable, Selectable, Serialize)]
+#[diesel(table_name = comments)]
+#[diesel(check_for_backend(diesel::sqlite::Sqlite))]
+pub struct Comment {
+    pub id: i32,
+    pub author: String,
+    pub content: String,
+}
+
+#[derive(Insertable, Serialize, Deserialize)]
+#[diesel(table_name = comments)]
+pub struct NewComment<'a> {
+    pub author: &'a str,
+    pub content: &'a str,
+}
+
+#[derive(Deserialize)]
+pub struct CreateCommentRequest {
+    pub author: String,
+    pub content: String,
+}